At one point I heard some company was making a helmet that had active noise cancellation built into it

Oneill had a helmet on the market that they promoted as "noise canceling". It had a factory-installed communications system with a noise-canceling microphone but the earphones in it were not noise-canceling.

Overall I'd say it was not a noise-canceling helmet. Looked like it had plenty of whistles mounted on top too.

I bought a sampler of different re-usable earplugs to find one kind that fits great and goes in easily. (Available from Aerostich.) That plus no windshields and a Shoei. Like B&Y said.

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"The belief that there is only one truth, and that oneself is in possession of it, is the root of all evil in the world."-- Max Born, Nobel Physicist